A 16-year-old boy stowed away in the wheel well of a flight from California to Hawaii on Sunday, surviving the trip halfway across the Pacific Ocean unharmed despite frigid temperatures at 38,000 feet and a lack of oxygen, FBI and airline officials said.

Sherpa guides on Mount Everest are considering a boycott after the deadliest avalanche in the mountain's history, a move that could seriously disrupt the rest of the climbing season, a mountaineering official said Monday.

South Korea's president described the actions of a sunken ferry's crew as "unforgivable" and "murderous" Monday as a prosecutor said that four more crew members had been detained on charges that they had allegedly failed to protect the stricken vessel's passengers.

Within hours of an Easter morning shootout at a checkpoint manned by pro-Russia insurgents in eastern Ukraine, Russia's Foreign Ministry issued a statement blaming militant Ukrainian nationalists and Russian state television stations aired pictures of supposed proof of their involvement in the attack that left at least three people dead.

A South Korean prosecutor said Monday that four more crew members of a ferry that sank off the country's south coast had been detained on charges that they had allegedly failed to protect the stricken vessel's passengers.